Speed – time graph Student activity Play

Speeds of a boat and a river Animation Play

Statistical problem specification Student activity Play

Statistical techniques Student activity Play

Statistical techniques Whiteboard exercise Play

Statistics – diagram Simulation Play

Subject of investigation Whiteboard exercise Play

Survival Class activity Play

System of equations Animation Play

System of equations describing big and small ice-creams problem Whiteboard exercise Play

System of equations describing drinks and ice-creams problem Whiteboard exercise Play

System of inequalities in two variables Student activity Play

System of inequalities in two variables Whiteboard exercise Play

System of linear equations Student activity Play

System of linear equations and their solutions Student activity Play

System of linear inequalities in one variable Student activity Play

System of linear inequalities with one variable Whiteboard exercise Play

Systems of inequalities with two variables Whiteboard exercise Play

Systems of inequalities with two variables Student activity Play

Systems of more than two linear equations Student activity Play

Systems of more than two linear equations Animation Play

The antropologists Animation Play

The bird diversity problem Student activity Play

The height and fluency of speech Animation Play

The letters in algebraic expressions, formulas, equations and functions Student activity Play